Circuits

Transmit/Receive Switch accelerates ultrasound design.

Housed in 36-pin 6 x 6 mm QFN package, 8-channel Model TX810 addresses designers' need to build portable ultrasound systems. Switch integrates protection diode bridge and clamp diodes for each channel to prevent high-voltage pulses of transmitter from damaging receive electronics of ultrasound system. Optimized insertion loss maintains integrity of input/output signal at 400 W load with 0.9 dB at...

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LTE Baseband Chip integrates into 4G wireless devices.

FourGee(TM)-3100 LTE baseband chip is LTE CAT-3 baseband processor that incorporates L1 and protocol stack, which includes PHY, MAC, RLC, PDCP, RRC, and NAS layers. Based on Altair signal processing engine, it features 2 x 20 MHz MIMO receive chains and 1 transmit chain as well as high-speed, programmable interface to standard HSPA/EVDO baseband and applications processors. It supports CAT3...

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Power Management IC consumes 12 µA with all outputs on.

Power Management IC consumes 12 µA with all outputs on.

Model LTC3553 multifunction power management IC measures 3 x 3 mm and features PowerPath(TM) manager that delivers up to 400 mA battery charge current from USB port or 5 V wall adapter input. Integrated synchronous buck regulator delivers up to 200 mA output current with output voltage adjustable down to 0.8 V. Unit also includes LDO regulator providing up to 150 mA output, pushbutton controller,...

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DC/DC Converter draws 85 µA of quiescent current.

DC/DC Converter draws 85 µA of quiescent current.

Operating within VIN range of 3.6-58 V, Model LT3980 includes overvoltage lockout protection against transients as high as 80 V, making device suited for load dump and cold-crank conditions found in automotive applications. Internal 3.4 A switch can deliver up to 2 A of continuous output current at voltages as low as 0.79 V. Housed in 3 x 4 mm DFN-16 package, step-down switching regulator...

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DC/DC Converter can deliver 400 and 800 mA independently.

DC/DC Converter can deliver 400 and 800 mA independently.

Dual-output, synchronous buck regulator LTC3619 has programmable average input current limit of 200 mA to 1.2 A. With efficiencies to 96%, IC delivers up to 800 mA continuous output current from one channel and 400 mA from other. Using constant frequency and current mode architecture, product operates from 2.5-5.5 V input and can generate 2 independent output voltages as low as 0.6 V. Switching...

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PLL/Synthesizer operates from 3,900-4,300 MHz.

PLL/Synthesizer operates from 3,900-4,300 MHz.

With typical step size of 2,500 KHz, model CPLL58-3900-4300 wraps VCO around PLL in 0.582 x 0.8 x 0.15 in. SMD package and requires only external frequency reference and supply voltages. It is programmed using standard 3-line interface - data, clock, and load enable - and exhibits typ phase noise of -95 dBc/Hz @ 10 kHz offset with min output power of 3 dBm. VCO voltage is 5 Vdc, PLL voltage is 3...

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Audio Converter/Driver IC suits various portable devices.

Model TS4657 combines audio DAC and line-driver functions to feed audio line-out connection of various portable home and audio products. Internal power management unit enables IC to produce 2.2 Vrms audio-output signal for voltages from 3.0-5.5 V. It can generate negative and positive voltages, allowing audio signal to be referenced to ground. With operating current of 7.4 mA, circuit achieves 93...

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Data Converter enables multi-carrier communications systems.

Data Converter enables multi-carrier communications systems.

Equipped with 32-bit numerically controlled oscillator, dual-channel 16-bit Model AD9122 features 400 MHz bandwidth and LVDS interface with 8 word deep FIFO memory, supporting max sample-data-input-rate of 1.2 GSPS. Operating with on-chip PLL at DAC output frequency of 150 MHz, unit delivers 76 dB ACLR for single-carrier WCDMA applications. For most demanding wireless communications applications,...

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